Zobrazeno 1 - 10
of 14 799
pro vyhledávání: '"bond Activation"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 2305-2312 (2024)
Iminoiodinanes comprise a class of hypervalent iodine reagents that is often encountered in nitrogen-group transfer (NGT) catalysis. In general, transition metal catalysts are required to effect efficient NGT to unactivated olefins because iminoiodin
Externí odkaz:
https://doaj.org/article/51db98f5fb414dbf8e11886af21ba4bc
Publikováno v:
Advanced Science, Vol 11, Iss 40, Pp n/a-n/a (2024)
Abstract Carbopalladation‐initiated cascade reaction involving 1,4‐Pd migration is a straightforward and powerful approach to activate remote C─H bond, forging versatile fused polycyclic compounds containing fluorene fragment which are highly v
Externí odkaz:
https://doaj.org/article/248bf094bf694a56bdaa70def05fda6f
Autor:
Qiang Liu, Ying‐Zheng Ren, Bei‐Bei Zhang, Wen‐Xin Tang, Zhi‐Xiang Wang, Lin He, Xiang‐Yu Chen
Publikováno v:
Advanced Science, Vol 11, Iss 38, Pp n/a-n/a (2024)
Abstract Catalytic activation of Caryl‐O bonds is considered as a powerful strategy for the production of aromatics from lignin. However, due to the high reduction potentials of diaryl ether 4‐O‐5 linkage models, their single electron reduction
Externí odkaz:
https://doaj.org/article/a1ce6cca97eb45309c8d6ccac440c135
Autor:
Dongxiao Yue, Hajime Hirao
Publikováno v:
Frontiers in Chemistry, Vol 12 (2024)
Previous theoretical studies have revealed that high-spin states possess flatter potential energy surfaces than low-spin states in reactions involving iron(IV)-oxo species of cytochrome P450 enzymes (P450s), nonheme enzymes, or biomimetic complexes.
Externí odkaz:
https://doaj.org/article/1d8e660aa83946a9a8a90db729365f7d
Publikováno v:
Green Energy & Environment, Vol 9, Iss 3, Pp 529-543 (2024)
Dehydrogenation is considered as one of the most important industrial applications for renewable energy. Cubic ceria-based catalysts are known to display promising dehydrogenation performances in this area. Large particle size (>20 nm) and less surfa
Externí odkaz:
https://doaj.org/article/3c60edeb71b54dc4991d1d303b2c3e09
Autor:
Irena Efremenko
Publikováno v:
Molecules, Vol 29, Iss 20, p 4788 (2024)
In our recent work, we revisited C–H and C–C bond activation in rhodium (I) complexes of pincer ligands PCP, PCN, PCO, POCOP, and SCS. Our findings indicated that an η3-Csp2Csp3H agostic intermediate acts as a common precursor to both C–C and
Externí odkaz:
https://doaj.org/article/f4c91f7b01c54fe8999aa91226fbcb92
Autor:
Miguel Martínez, David Dalmau, Olga Crespo, Pilar García-Orduña, Fernando Lahoz, Antonio Martín, Esteban P. Urriolabeitia
Publikováno v:
Inorganics, Vol 12, Iss 10, p 271 (2024)
This work aims to amplify the fluorescence of (Z)-4-hetarylidene-5(4H)-oxazolones 1 by suppression of the hula-twist non-radiative deactivation pathway by C^N-orthopalladation of the 4-hetarylidene ring. Different (Z)-4-hetarylidene-2-phenyl-5(4H)-ox
Externí odkaz:
https://doaj.org/article/3fb9b2969525491ebfc13ac61e994353
Publikováno v:
Molecules, Vol 29, Iss 19, p 4541 (2024)
The development of a suitable catalytic system for methane pyrolysis reactions requires a detailed investigation of the activation energy of C-H bonds on catalysts, as well as their stability against sintering and coke formation. In this work, both s
Externí odkaz:
https://doaj.org/article/16a292260ab949d0998c11ea0fbaeef0
Publikováno v:
Molecules, Vol 29, Iss 17, p 4266 (2024)
A novel approach for the α-alkylation of ketones was developed using Brønsted acid-catalyzed C-C bond cleavage. Both aromatic and aliphatic ketones reacted smoothly with 2-substituted 1,3-diphenylpropane-1,3-diones to afford α-alkylation products
Externí odkaz:
https://doaj.org/article/02f1ddc5d4f243bd85317c918d810a64
Autor:
Daniel González‐Pinardo, Dr. Felix Krämer, Prof. Dr. Frank Breher, Prof. Dr. Israel Fernández
Publikováno v:
ChemistryEurope, Vol 2, Iss 3-4, Pp n/a-n/a (2024)
Abstract The factors controlling the activation of σ‐bonds promoted by hidden Frustrated Lewis Pairs have been computationally explored using quantum chemical tools. To this end, the influence of both the nature of the group 13 element acting as L
Externí odkaz:
https://doaj.org/article/e418044658e54083b81e7e4688d9fcc6